foundation Synonyms

introduction understructure initiation fundament basis innovation cornerstone creation base foot substructure groundwork instauration origination institution founding syrtis syrt trestle tuber universe underside underprop underpinning underlying underlie underlayer underlay underbuilding undercoat sustentation scaffold salsify rudiment rouge root rock riprap rhizome religiosity reason scaffolding support socle supposal sumption substruction substratum substrate stylobate